Area Forecast Discussion
Issued by NWS San Joaquin Valley, CA

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187
FXUS66 KHNX 181118
AFDHNX

Area Forecast Discussion
National Weather Service San Joaquin Valley - Hanford CA
318 AM PST Sat Nov 18 2017

.SYNOPSIS...
Onshore flow across the area this weekend will provide seasonal
temperatures and dry conditions. Weak cold front will clip
Yosemite on Monday with a few showers possible. Upper level ridge
will build in and warm us up through next weekend with above
normal temperatures and dry conditions.

&&

.DISCUSSION...
Flat zonal flow across the area through the weekend will keep our
temperatures steady. Late night and early morning fog is possible
in the San Joaquin Valley over the next several days. A weak cold
front is forecast to remain north of the FA on Monday. We have
backed off significantly for showers on Monday. An upper level
ridge is forecast to build in over the area and warm us up through
the week. Based on current forecast trends, we are looking at
Thursday to be the warmest day.

Upper ridge locks in over Baja as a series of storm systems are
forecast to ride over the top of the ridge into the PAC NW.
With the ridge in place, forecast temps and fog development will
be quite difficult over the next several days. Forecast challenge
will be for the duration of low clouds and fog in the SJV and when
it burns off. If the inversion gets strong enough, the fog might
have some trouble dissipating late morning and could last into the
afternoon.

&&

.AVIATION...
Mountain obscuring IFR conditions due to low clouds over the
Kern county Mountains and along the Southern Sierra this morning
until 18z. MVFR visibility with local IFR in fog across the San
Joaquin Valley until 18z. Otherwise, VFR conditions will prevail
across the central CA interior during the next 24 hours.

&&

.AIR QUALITY ISSUES...
None.

&&

.CERTAINTY...

The level of certainty for days 1 and 2 is medium.
The level of certainty for days 3 through 7 is medium.

Certainty levels include low...medium...and high. Please visit
www.weather.gov/hnx/certainty.php for additional information
an/or to provide feedback.

&&

.HNX Watches/Warnings/Advisories...
None.

&&

$$

public...JDB
avn/fw...MV
synopsis...JDB

weather.gov/hanford



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